On Thursday, Japanese authorities, including the government and the Bank of Japan, intervened in the foreign exchange market by buying yen and selling US dollars after the yen weakened past the 160 mark against the dollar, a move confirmed by a government official to Nikkei [1]. This marks the first official FX intervention since 2024, according to reports citing Japanese government sources [2]. The intervention was prompted by concerns over speculative attacks on the yen and followed a series of explicit warnings from officials, including Finance Minister Satsuki Katayama, who emphasized the government's commitment to market stability and stated, 'We will take appropriate action against excessively volatile moves in the exchange rates' [1][2]. Top currency diplomat Atsushi Mimura also warned of rising speculative activity earlier in the day [2].
The intervention led to a sharp appreciation of the yen, with the USD/JPY pair dropping from 160 to as low as 155 before stabilizing near 159, according to Nikkei [1]. FXStreet reports that the USD/JPY fell by 2.21% on Thursday, trading around 156.90 at the time of writing, and notes that the Japanese yen was the strongest performer against the US dollar among major currencies, appreciating by 2.23% [2]. Technical analysis highlighted resistance at 160 and support at 155, with volatility spiking during the intervention [1].
Market participants described the intervention as swift and targeted, with heavy dollar selling and yen buying by Japanese authorities, resulting in surging trading volumes [1]. The move was interpreted as a clear signal of Japan's readiness to act decisively to prevent further yen depreciation, with analysts noting that policymakers are closely monitoring FX markets and may intervene again if necessary [1].
The government's actions reflect growing concerns about imported inflation and the impact of a weak yen on domestic prices [1]. Market sentiment remains cautious, with traders watching key support and resistance levels and anticipating potential further volatility and policy action in the coming sessions [1].
CONCLUSION
Japan's FX intervention, the first since 2024, temporarily strengthened the yen and sent a strong message to markets about the authorities' intolerance for excessive currency weakness. While the yen's rally was short-lived, the decisive action underscores heightened vigilance and the potential for further interventions if volatility persists. Market participants remain cautious, closely monitoring official signals and key technical levels.